def test_ray_shooting_partial_2(self):
z_source = 1.5
lens_model_list = ['SIS', 'SIS', 'SIS', 'SIS']
sis1 = {'theta_E': 0.4, 'center_x': 0, 'center_y': 0}
sis2 = {'theta_E': .2, 'center_x': 0.5, 'center_y': 0}
sis3 = {'theta_E': .1, 'center_x': 0, 'center_y': 0.5}
sis4 = {'theta_E': 0.5, 'center_x': 0.1, 'center_y': 0.3}
lens_model_list_macro = ['SIS']
kwargs_macro = [{'theta_E': 1, 'center_x': 0, 'center_y': 0}]
zmacro = 0.5
z1 = 0.1
z2 = 0.5
z3 = 0.5
z4 = 0.7
redshift_list = [z1, z2, z3, z4]
kwargs_lens = [sis1, sis2, sis3, sis4]
kwargs_lens_full = kwargs_macro + kwargs_lens
lensModel_full = MultiPlane(z_source=z_source, lens_model_list=lens_model_list_macro + lens_model_list,
lens_redshift_list=[zmacro]+redshift_list)
lensModel_macro = MultiPlane(z_source=z_source, lens_model_list=lens_model_list_macro, lens_redshift_list=[zmacro])
lensModel = MultiPlane(z_source=z_source, lens_model_list=lens_model_list, lens_redshift_list=redshift_list)
theta_x, theta_y = 1., 1.
x_subs, y_subs, alpha_x_subs, alpha_y_subs = lensModel.ray_shooting_partial(x=0, y=0, alpha_x=theta_x,
alpha_y=theta_y, z_start=0,
z_stop=zmacro,
kwargs_lens=kwargs_lens)
x_out, y_out, alpha_x_out, alpha_y_out = lensModel_macro.ray_shooting_partial(x_subs, y_subs, alpha_x_subs, alpha_y_subs,
zmacro, zmacro, kwargs_macro,
include_z_start=True)
npt.assert_almost_equal(x_subs, x_out)
npt.assert_almost_equal(y_subs, y_out)
x_full, y_full, alpha_x_full, alpha_y_full = lensModel_full.ray_shooting_partial(0, 0, theta_x, theta_y, 0, zmacro,
kwargs_lens_full)
npt.assert_almost_equal(x_full, x_out)
npt.assert_almost_equal(y_full, y_out)
npt.assert_almost_equal(alpha_x_full, alpha_x_out)
npt.assert_almost_equal(alpha_y_full, alpha_y_out)
x_src, y_src, _, _ = lensModel_full.ray_shooting_partial(x=x_out, y=y_out, alpha_x=alpha_x_out,
alpha_y=alpha_y_out,
z_start=zmacro,
z_stop=z_source,
kwargs_lens=kwargs_lens_full)
beta_x, beta_y = lensModel.co_moving2angle_source(x_src, y_src)
beta_x_true, beta_y_true = lensModel_full.ray_shooting(theta_x, theta_y, kwargs_lens_full)
npt.assert_almost_equal(beta_x, beta_x_true, decimal=8)
npt.assert_almost_equal(beta_y, beta_y_true, decimal=8)
def test_ray_shooting_partial(self):
z_source = 1.5
lens_model_list = ['SIS', 'SIS', 'SIS']
sis1 = {'theta_E': 1., 'center_x': 0, 'center_y': 0}
sis2 = {'theta_E': .2, 'center_x': 0.5, 'center_y': 0}
sis3 = {'theta_E': .1, 'center_x': 0, 'center_y': 0.5}
z1 = 0.1
z2 = 0.5
z3 = 0.7
redshift_list = [z1, z2, z3]
kwargs_lens = [sis1, sis2, sis3]
lensModel = MultiPlane(z_source=z_source, lens_model_list=lens_model_list, lens_redshift_list=redshift_list)
lensModel_2 = LensModel(z_source=z_source, lens_model_list=lens_model_list, lens_redshift_list=redshift_list, multi_plane=True)
multiplane_2 = lensModel_2.lens_model
intermediate_index = 1
theta_x, theta_y = 1., 1.
Tzsrc = lensModel._multi_plane_base._cosmo_bkg.T_xy(0, z_source)
z_intermediate = lensModel._multi_plane_base._lens_redshift_list[intermediate_index]
for lensmodel_class in [lensModel, multiplane_2]:
x_out, y_out, alpha_x_out, alpha_y_out = lensmodel_class.ray_shooting_partial(x=0, y=0, alpha_x=theta_x,
alpha_y=theta_y, z_start=0, z_stop=z_intermediate, kwargs_lens=kwargs_lens)
x_out_full_0 = x_out
y_out_full_0 = y_out
x_out, y_out, alpha_x_out, alpha_y_out = lensmodel_class.ray_shooting_partial(x=x_out, y=y_out, alpha_x=alpha_x_out,
alpha_y=alpha_y_out, z_start=z_intermediate,
z_stop=z_source,
kwargs_lens=kwargs_lens)
beta_x, beta_y = lensModel.co_moving2angle_source(x_out, y_out)
beta_x_true, beta_y_true = lensmodel_class.ray_shooting(theta_x, theta_y, kwargs_lens)
npt.assert_almost_equal(beta_x, beta_x_true, decimal=8)
npt.assert_almost_equal(beta_y, beta_y_true, decimal=8)
T_ij_start = lensModel._multi_plane_base._cosmo_bkg.T_xy(z_observer=0, z_source=0.1)
T_ij_end = lensModel._multi_plane_base._cosmo_bkg.T_xy(z_observer=0.7, z_source=1.5)
x_out, y_out, alpha_x_out, alpha_y_out = lensmodel_class.ray_shooting_partial(x=0, y=0, alpha_x=theta_x,
alpha_y=theta_y, z_start=0, z_stop=z_source, kwargs_lens=kwargs_lens,
T_ij_start=T_ij_start, T_ij_end=T_ij_end)
beta_x, beta_y = x_out/Tzsrc, y_out/Tzsrc
npt.assert_almost_equal(beta_x, beta_x_true, decimal=8)
npt.assert_almost_equal(beta_y, beta_y_true, decimal=8)